（）如附圖所示，有一電子由西向東水平射入一均勻的磁場中，則該電子在磁場中受力的方向為何？　(A)向南　(B)向北　(C)向上　(D)向下。

問題詳情

9. （）如附圖所示，有一電子由西向東水平射入一均勻的磁場中，則該電子在磁場中受力的方向為何？　
(A)向南　
(B)向北　
(C)向上　
(D)向下。 phpZRQh9F

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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